Transformer quandry

[g1]

Still seems high to you compared to what? Was the B+ less than 358VDC with the old noisy transformer?

[Randall]

I just double checked, and I have 354vdc on pin 8 of the rectifier. What puzzles me is I had 334vac B+ with original PT. Doesn't make sense, does it?

[g1]

Doesn't make a lot of sense if the original PT had higher unloaded voltage. But the unloaded voltages had to both be measured either with or without those CT resistors.
Could that account for the difference?

[Randall]

That is why I am confused, both measurements are with CT resistors and tubes in. Something isn't right.

[Pixel]

That is why I am confused, both measurements are with CT resistors and tubes in. Something isn't right.

I'm not experienced with fixing amplifiers, but I AM very experienced with fixing other peoples mistakes in logic and programming. The very existence of the CT resistors makes me doubt everything about this unit. I am very curious about whether that really was a ground wire on the original transformer or not. Logically if it was attached to ground then it should be a ground wire...but idk if logic drove the decisions in building this unit.

[Randall]

But the thing is, it worked the way it was built, it just made mechanical noise. So the customer opted to replace the PT with one close to what I was measuring in the original. But now the new one seems to high in voltage. I am stumped here.